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unknown reasons for iView timeout in EP 6.0

Hello,

we have recently developed a HR portal application for appraising employees. It is an application using JSP DynPage,connecting to R3 with JCo. The strangest thing about it, is that it works perfectly well on our DEV EP, however on production portal it doesn't. When user tries to save an appraisal form, we get an error. This happens if time of edition of the form exceeds about one minute. If user saves his appraisal quicker,everything is just ok. We don't have this time restriction on DEV EP. User can save his appraisal even after 20 minutes of edition. We were looking for differences in DEV and PRD portals, and found none, except the number of users. We can't figure out, what may be causing this problem. Any ideas? Please help.

Apr 7, 2006 2:40:39 PM Fatal PRT-Async 5 [async] Exception in PortalRequestManager.dispatchRequest without timeout

java.lang.NullPointerException

at com.img.polkomtel.hr.AppraisalCard$UsingJSPDynPagePage.doProcessAfterInput(AppraisalCard.java:181)

at com.sapportals.htmlb.page.PageProcessor.handleRequest(PageProcessor.java:91)

at com.sapportals.portal.htmlb.page.PageProcessorComponent.doContent(PageProcessorComponent.java:135)

at com.sapportals.portal.prt.component.AbstractPortalComponent.serviceDeprecated(AbstractPortalComponent.java:209)

at com.sapportals.portal.prt.component.AbstractPortalComponent.service(AbstractPortalComponent.java:114)

at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:301)

at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:138)

at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:191)

at com.sapportals.portal.prt.core.async.AsyncPortalComponentResponse.include(AsyncPortalComponentResponse.java:384)

at com.sapportals.portal.prt.core.async.AsyncPortalComponentResponse.include(AsyncPortalComponentResponse.java:338)

at com.sapportals.portal.navigation.workAreaiView.doContent(workAreaiView.java:252)

at com.sapportals.portal.prt.component.AbstractPortalComponent.serviceDeprecated(AbstractPortalComponent.java:209)

at com.sapportals.portal.prt.component.AbstractPortalComponent.service(AbstractPortalComponent.java:114)

at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:301)

at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:138)

at com.sapportals.portal.prt.core.async.AsyncIncludeRunnable$1$DoDispatchRequest.run(AsyncIncludeRunnable.java:363)

at java.security.AccessController.doPrivileged(Native Method)

at com.sapportals.portal.prt.core.async.AsyncIncludeRunnable.run(AsyncIncludeRunnable.java:376)

at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:729)

at java.lang.Thread.run(Unknown Source)

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